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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA JURNAL EKSAKTA PENDIDIKAN (JEP) PeTeKa JURNAL MathEdu (Mathematic Education Journal) Minda Baharu Jurnal Pendidikan dan Konseling Edumatika Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Hasil Penelitian dan Pengembangan (JHPP) Jurnal Pengabdian Kepada Masyarakat Radisi Jurnal KALANDRA Jurnal Cermatika Jurnal Cermatika Jurnal Inovasi Pendidikan Nusantara
Yuni Rhamayanti
Universitas Graha Nusantara
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBER HEAD TOGETHER (NHT) UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA KELAS VIII-1 SMP NEGERI 4 MUARA BATANG GADIS TP. 2021/2022 Wilda Harianti; Yuni Rhamayanti; Puspa Riani Nasution
JURNAL CERMATIKA Vol. 2 No. 2 (2022): Jurnal Cermatika Vol 2 No 2 Oktober 2022
Publisher : Program Studi Matematika Universitas Graha Nusantara Padangsidimpuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64168/cermatika.v2i2.1044

Abstract

This The low ability of students' mathematical problem solving affects the success of a learning process. Learning model as a tool to achieve a goal. The better a learning model, the better the achievement. So one of the most important teacher tasks, before carrying out their duties is to know and apply the learning model, the model used in this study is the Number Head Together (NHT) cooperative learning model.This research is a classroom action research (CAR) by taking the research subjects of Class VIII-1 students of SMP Negeri 4 Muara Batang Gadis for the academic year 2021-2022. consisting of 22 students. The objects taken in the research are students' problem solving abilities, student learning activities in the implementation of classroom learning, teacher activities that specialize in the Number Head Together (NHT) type cooperative learning model to improve students' mathematical problem solving on the subject of Two Variable Linear Equation Systems ( SPLDV). The results of this study show that the problem-solving ability of students using the Number Head Together (NHT) type of cooperative learning model for Class VIII-1 students of SMP Negeri 4 Muara Batang Gadis in the 2021-2022 academic year has increased, it can be seen from the students' mathematical problem solving ability in the first cycle of 45 ,45% who completed the second cycle and 81.82% of students who completed the 22 students who took the study test. Based on the research data through the student observers, the percentage was 68.75% in the first cycle and 90% in the second cycle. Based on the research data through teacher observers, the percentage was 3.45 in the first cycle and 3.94 in the second cycle. So, it can be concluded that each cycle has increased and is included in the "very good" category and has met the research achievement criteria, so this research stops in cycle II.Based on these results, the application of the Number Head Together (NHT) learning model can improve students' mathematical problem solving skills on the subject of a two-variable linear equation system in class VIII-1 of SMP Negeri 4 Muara Batang Gadis in the 2021-2022 academic year.
EDUKASI NUMERASI BERBASIS LIVING LAB EKOSISTEM UNTUK KETANGGUHAN EKONOMI DESA BENCANA Yuni Rhamayanti; Rasmita Adelina; Erin Alawiyah Siregar
JURNAL MathEdu (Mathematic Education Journal) Vol 9 No 2 (2026): JURNAL MathEdu (Mathematic Education Journal) Juli 2026
Publisher : Program Studi Pendidikan Matematika Institut Pendidikan Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37081/mathedu.v9i2.8251

Abstract

Natural disasters cause disruptions to the economic sustainability of rural communities, especially in areas that depend on the agricultural sector and micro enterprises. This condition occurred in Tolang Julu Village, South Tapanuli Regency, which experienced limited economic productivity after the disaster. This study aims to describe the implementation of living lab ecosystem-based numeracy education in supporting the economic resilience of disaster village communities through strengthening productive businesses and numeracy-based economic management. The research uses a qualitative descriptive approach with a participatory design based on the living lab ecosystem. The research subjects consisted of the Harapan Jaya Farmers Group and the PKK Women of Tolang Julu Village who were selected by purposive sampling. Data collection was carried out through observation, semi-structured interviews, documentation, and field notes, then analyzed interactively through data reduction, data presentation, and conclusion drawn. The results of the study show that the implementation of numeracy education is able to increase the technical and managerial capacity of the community through hydroponic cultivation, multi-commodity frozen food processing, simple business registration, and digital marketing. The community is starting to be able to apply the calculation of production costs, selling prices, profit estimation, and business management in a more measurable manner. These findings show that living lab ecosystem-based numeracy education has the potential to be an effective community empowerment strategy in strengthening the economic resilience of villages after disasters in a sustainable manner.
IMPLEMENTASI PROBLEM BASED LEARNING BERBANTUAN YOUTUBE UNTUK MENINGKATKAN KREATIVITAS SISWA Puspa Riani Nasution; Yuni Rhamayanti; Roito Hutagalung
PeTeKa (Jurnal Penelitian Tindakan Kelas dan Pengembangan Pembelajaran) Vol 8, No 4 (2025): PeTeKa : Jurnal Penelitian Tindakan Kelas dan Pengembangan Pembelajaran
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/ptk.v8i4.1201-1207

Abstract

This study aims to: first, to find out whether the implementation of Problem Based Learning assisted by YouTube can improve students' creativity in class VII 7 SMP Negeri 5 Padangsidimpuan. Second, to find out the increase in student activity towards mathematics learning through the Implementation of Problem Based Learning Assisted by YouTube in class VII - 7 SMP Negeri 5 Padangsidimpuan. Third, to find out the increase in teachers' ability in managing learning through the Implementation of Problem Based Learning Assisted by YouTube in class VII-7 SMP Negeri 5 Padangsidimpuan. This type of research is Classroom Action Research (CAR). Which consists of 2 cycles. The subjects of this study were class VII-7 consisting of 30 students. The results of the study showed that students' creativity abilities by implementing Problem Based Learning Assisted by YouTube in cycle 1 obtained with a minimum category of “Very poor”, which was 46.67% and in cycle II increased to 93.33% with a “Very Good” category. The increase from cycle 1 to cycle II was 46.66%. With the achievement indicator already achieved ? 80% Then for the results of observations of student activities in cycle 1 obtained 65.63% in the category "Less”, while in cycle II obtained 89.06% in the category "Good” The increase that occurred and cycle 1 to cycle II was 23.43% The achievement indicator has been achieved ? 80%. While for the results of observations of teacher's abilities in cycle 1 with the category "Enough" of 73.96% and cycle II obtained with the category "Good" of 87.50%.
PENGEMBANGAN WORKSHEET MANIPULATIF BERBASIS CONTEXTUAL TEACHING AND LEARNING DI SEKOLAH DASAR Torang Siregar; Yuni Rhamayanti
Jurnal Inovasi Pendidikan Nusantara Vol. 3 No. 1 (2026): Juni
Publisher : LLDIKTI WILAYAH XIII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64958/jipn.v3i1.137

Abstract

Pembelajaran matematika di sekolah dasar, khususnya pada materi pecahan, seringkali menghadapi kendala karena penyajian yang abstrak dan kurangnya penggunaan media konkret. Penelitian ini bertujuan untuk mengembangkan worksheet manipulatif berbasis Contextual Teaching and Learning (CTL) dan menguji efektivitasnya dalam meningkatkan pemahaman konsep pecahan siswa. Penelitian dilaksanakan di SD Negeri 01 Bintungan, Kecamatan Sinunukan, Kabupaten Mandailing Natal, Sumatera Utara, pada semester genap tahun ajaran 2025/2026. Subjek penelitian adalah siswa kelas VI-A sebanyak 23 orang dan kelas VI-B sebanyak 25 orang. Metode yang digunakan adalah Research and Development (R&D) dengan model ADDIE yang meliputi tahap analysis, design, development, implementation, dan evaluation. Pengumpulan data dilakukan melalui observasi, wawancara, angket, dan tes hasil belajar (pretest dan posttest). Hasil penelitian menunjukkan bahwa worksheet manipulatif berbasis CTL yang dikembangkan valid dan praktis digunakan. Efektivitas media terlihat dari peningkatan hasil belajar siswa kelas VI-A sebesar 34,2% (pretest 60,2 menjadi posttest 80,8) dan kelas VI-B sebesar 33,7% (pretest 59,8 menjadi posttest 79,9). Aktivitas manipulatif seperti memotong dan menyusun pecahan meningkatkan keterlibatan aktif siswa. Kesimpulannya, worksheet manipulatif berbasis CTL efektif dan layak digunakan untuk mendukung pembelajaran pecahan yang bermakna di sekolah dasar.
MODEL INQUIRY LEARNING: SOLUSI PENINGKATAN PEMECAHAN MASALAH DAN AKTIVITAS BELAJAR MATEMATIKA SISWA SMA Yuni Rhamayanti; Adek Nilasari Harahap; Yulia Ainal Warda Hasibuan
Eksakta : Jurnal Penelitian dan Pembelajaran MIPA Vol 10, No 2 (2025): Eksakta : Jurnal Penelitian dan Pembelajaran MIPA
Publisher : Fakultas Keguruan Dan Ilmu Pendidikan, UM-Tapsel

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/eksakta.v10i2.39-47

Abstract

Penelitian ini dilaksanakan untuk menawarkan Model Inquiry Learning sebagai solusi dalam meningkatkan kemampuan pemecahan masalah matematika siswa. Latar belakang studi ini adalah rendahnya partisipasi belajar dan kesulitan signifikan yang dialami siswa kelas X-2 SMA Negeri 1 Ulu Barumun saat memahami konsep serta menyelesaikan soal matematika kompleks, khususnya soal cerita. Pendekatan yang diterapkan dalam riset ini adalah Penelitian Tindakan Kelas (PTK) dua siklus, yang setiap siklusnya mencakup tahap perencanaan, implementasi, observasi, dan refleksi. Hasilnya sangat mendukung, menunjukkan peningkatan berarti pada keterampilan pemecahan masalah matematis siswa: tingkat ketuntasan klasikal melonjak dari 71.4 % pada Siklus I menjadi 89.3% pada Siklus II. Tak hanya itu, aktivitas belajar siswa juga memperlihatkan kenaikan yang substansial, dari 73.55% menjadi 85.75%, dan kemampuan guru dalam memfasilitasi pembelajaran turut menguat, mencapai 92.5% dari 84.38% sebelumnya. Model Inquiry Learning telah terbukti efektif dalam membentuk pembelajaran yang interaktif, meningkatkan keterlibatan siswa, dan memperkuat keterampilan berpikir kritis mereka. Temuan ini memberikan prospek yang sangat baik untuk implementasi model ini di berbagai konteks pendidikan dan materi pelajaran lainnya di masa depan.
Co-Authors ., Rayana Abrizal Hasibuan Adek Nilasari Harahap Agus Makmur Ali Djamhuri Alwendi, Alwendi andika saputra harahap Ayathollah Khomeni Dhuraba Qodriansyah elvi rosalinda siagian Eni Sumanti Nasution Erin Alawiyah Siregar Evitamala Siregar fatima sari Fauziah Nasution Fitriani Fitriani Habibah Hammamah Harahap, Haritsah Harahap, Adek Nilasari harahap, mukmin Haritsah Hammamah Harahap Haritsah Hammamah Herahap Isra Novidayanti Matondang khoirunniasa . Khomeni, Ayathollah Lynni Suryani Mansukri Mansukri Marozi Hardiansyah Melida Warni Nasution mhd fahmi lubis Mohd. Arifin Nandini Faradilla Nenni Herawati Siregar Nova Christina Dewi Nur Atika Lubis Nurdalilah Nurdalilah Nurdalilah Nurdalilah Nurdalilah, Nurdalilah Nurhawani Sitompul Puspa Riani Nasution Puspa Riani Nasution Puspa Riani Nasution Putri Lestari Simamora Rahima Safitra Pane Ramadhan Saleh Rasmita Adelina Riski Handayani robi nastain Roito Hutagalung Siregar, Rama Nida Sri Rejeki Pakpahan Sri Rezeki Pakpahan Susi Sulastri Lubis Susi Sulastri Lubis Tinur Rahmawati Torang Siregar Torang Siregar Trio Kharisma Trio Kharisma Try Wahyuni Wilda Harianti Wulan Eka Putri Yeni Cholida Yeni Cholidah Lubis Yulia Ainal Warda Hasibuan